A 76-year-old resident of an assisted living facility who has a history of heart failure has presented to her primary care provider for a scheduled appointment. Which of the woman's statements suggests that her heart failure is worsening?

A. "I find that I have to wake up two or three times a night to go to the washroom, which never used to be the case."
B. "I find that my appetite is not what it used to be, and I have to will myself to eat enough healthy food."
C. "I pride myself in staying alert and up-to-date but lately I've forgotten a few important events."
D. "The last few weeks I've found that I'm more comfortable sleeping in a chair than in my bed."